linux-kernel - Re: [PATCH v3 09/14] dt-bindings: fsi: Document the FSI Hub Controller

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Date: Fri, 26 Apr 2024 10:19:54 -0500
From: Eddie James <eajames@...ux.ibm.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, linux-aspeed@...ts.ozlabs.org
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-fsi@...ts.ozlabs.org, linux-spi@...r.kernel.org,
        linux-i2c@...r.kernel.org, lakshmiy@...ibm.com, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, joel@....id.au,
        andrew@...econstruct.com.au
Subject: Re: [PATCH v3 09/14] dt-bindings: fsi: Document the FSI Hub
 Controller


On 4/26/24 01:26, Krzysztof Kozlowski wrote:
> On 25/04/2024 23:36, Eddie James wrote:
>> Document the FSI Hub Controller CFAM engine.
>>
>> Signed-off-by: Eddie James <eajames@...ux.ibm.com>
>> ---
>>   .../bindings/fsi/ibm,hub-fsi-controller.yaml  | 44 +++++++++++++++++++
>>   1 file changed, 44 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/fsi/ibm,hub-fsi-controller.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/fsi/ibm,hub-fsi-controller.yaml b/Documentation/devicetree/bindings/fsi/ibm,hub-fsi-controller.yaml
>> new file mode 100644
>> index 000000000000..d96d777d4d9f
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/fsi/ibm,hub-fsi-controller.yaml
>> @@ -0,0 +1,44 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/fsi/ibm,hub-fsi-controller.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: IBM FSI-attached FSI Hub Controller
>> +
>> +maintainers:
>> +  - Eddie James <eajames@...ux.ibm.com>
>> +
>> +description: |
> Do not need '|' unless you need to preserve formatting.


Ack.


>
>> +  The FSI Hub Controller is an FSI controller, providing a number of FSI links,
>> +  located on a CFAM. Therefore this node will always be a child of an FSI CFAM
>> +  node.
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - ibm,hub-fsi-controller
> Again, is it for specific chip? SoC? Aren't you using generic
> compatibles (not allowed)?


This one is fairly universally supported on FSI (any POWER chip will 
have it) so I didn't add a specific chip... Should i? Do you mean 
generic compatibles are not allowed? How generic do you mean?


>
>
>
> Best regards,
> Krzysztof
>